Molekula
Magnesium hydroxide carbonate
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Magnesium hydroxide carbonate is an inorganic compound primarily used as an antacid, flame retardant, and in the production of rubber and plastics for its stabilizing properties. Its documented industrial applications also include use in pulp and paper processing. It appears as a white, odorless powder with low toxicity and environmental safety. This chemical has a CAS number of 12125-28-9, with the molecular formula CO3·HO·Mg and a molecular weight of 84.31. It is stable at ambient storage conditions and carries no signal word for hazards. Molekula supplies magnesium hydroxide carbonate from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
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Specifications
| Property | Value |
|---|---|
| Appearance | White powder |
| Water | ≤6% |
| Loss on Ignition | 54 ~ 58% |
| Chloride (Cl-) | ≤0.05% |
| Bulk density | ≤0.15 g/ml |
| Acid insoluble | ≤0.05% |
| Iron (Fe) | ≤0.05% |
| Manganese (Mn) | ≤0.004% |
| Sulphates (SO4)(2-) | ≤0.15% |
| Calcium Oxide (CaO) | ≤1.8% |
| Magnesium Oxide (MgO) | ≥40% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Base |
Identification
| Property | Value |
|---|---|
| SKU | 90027412 |
| CAS Number | 12125-28-9 |
| IUPAC Name | hexamagnesium;tetracarbonate;dihydroxide;pentahydrate |
| EC Number | 235-192-7 |
| Molecular Formula | CO3·HO·Mg |
| Molecular Weight | 84.31 |
| Exact Mass | 507.9075 |
| SMILES | C(=O)([O-])[O-].C(=O)([O-])[O-].C(=O)([O-])[O-].C(=O)([O-])[O-].O.O.O.O.O.[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2] |
| InChIKey | UOVKYUCEFPSRIJ-UHFFFAOYSA-D |
| InChI | InChI=1S/4CH2O3.6Mg.7H2O/c4*2-1(3)4;;;;;;;;;;;;;/h4*(H2,2,3,4);;;;;;;7*1H2/q;;;;6*+2;;;;;;;/p-10 |
| PubChem CID | 73415762 |
| REACH Code | Y113 |
| HTS Code | 28369950 |
| Tariff Code | 2836991100 |
Safety & GHS
Precautionary statements
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Russian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- Basic magnesium carbonate
- CARBONIC ACID, MAGNESIUM SALT (1:1), MIXT. WITH MAGNESIUM HYDROXIDE, HYDRATE
- HYDRATED BASIC MAGNESIUM CARBONATE
- INS NO.504(II)
- Kinsei
- Magnesium carbonate basic
- MAGNESIUM CARBONATE HYDROXIDE
- MAGNESIUM SUBCARBONATE (LIGHT OR HEAVY)
- Marinco C
Frequently asked questions
What is magnesium hydroxide carbonate commonly used for?
Magnesium hydroxide carbonate is primarily used in pharmaceuticals as an antacid, in fireproofing materials, and as a filler or extender in plastics and rubber.
What is the chemical formula and molecular weight of magnesium hydroxide carbonate?
The chemical formula is CO₃·HO·Mg, and the molecular weight is 84.31 g/mol (anhydrous). The hydrated basic carbonate is usually described as (MgCO₃)₄·Mg(OH)₂·5H₂O, i.e. Mg₅(CO₃)₄(OH)₂·4–5H₂O (hydromagnesite type).
How should magnesium hydroxide carbonate be stored?
Store in a cool, dry place at ambient temperature, away from moisture and incompatible substances.
What grades of magnesium hydroxide carbonate does Molekula supply?
Molekula supplies technical/industrial grade magnesium hydroxide carbonate; pharmaceutical or food-grade options may require custom inquiry.
Can Molekula supply magnesium hydroxide carbonate in bulk quantities?
Yes, we offer bulk packaging options for magnesium hydroxide carbonate—contact us for specific volume requirements and lead times.
What documentation is provided with an order of magnesium hydroxide carbonate?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and a packing slip with batch details.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.